Question

найдите все натуральные значения x при которых верно неравенство 1/3 < x/36 < 5/6

Answer 1

1/3<x/36<5/6
домножим все на 36
12<x<30
13, 14, 15, 16, 17, 18, 19, 20, 21,
22, 23, 24, 25, 26, 27, 28, 29